/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to you under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.objcoding.calcite.csv.translate;

import org.apache.calcite.schema.Schema;
import org.apache.calcite.schema.SchemaFactory;
import org.apache.calcite.schema.SchemaPlus;

import java.io.File;
import java.util.Locale;
import java.util.Map;

/**
 * Factory that creates a {@link CsvSchema}.
 *
 * <p>Allows a custom schema to be included in a <code><i>model</i>.json</code>
 * file.
 */
@SuppressWarnings("UnusedDeclaration")
public class CsvSchemaFactory implements SchemaFactory {
    /**
     * Name of the column that is implicitly created in a CSV stream table
     * to hold the data arrival time.
     */
    static final String ROWTIME_COLUMN_NAME = "ROWTIME";

    /**
     * Public singleton, per factory contract.
     */
    public static final CsvSchemaFactory INSTANCE = new CsvSchemaFactory();

    private CsvSchemaFactory() {
    }

    public Schema create(SchemaPlus parentSchema, String name,
                         Map<String, Object> operand) {
//        final String directory = (String) operand.get("directory");
//        final File base =
//            (File) operand.get(ModelHandler.ExtraOperand.BASE_DIRECTORY.camelName);
//        String path = Paths.get(directory).toAbsolutePath().toString();
        File directoryFile = new File("src/main/resources/sales");
//        if (base != null && !directoryFile.isAbsolute()) {
//            directoryFile = new File(base, directory);
//        }



        String flavorName = (String) operand.get("flavor");
        CsvTable.Flavor flavor;
        if (flavorName == null) {
            flavor = CsvTable.Flavor.SCANNABLE;
        } else {
            flavor = CsvTable.Flavor.valueOf(flavorName.toUpperCase(Locale.ROOT));
        }
        return new CsvSchema(directoryFile, flavor);
    }
}
